Update CHANGELOG.md

Prepare v8.0.0 release (1st PS 0.15.0-compatible release) (purescript#20

)

* Update the bower dependencies

* Update Node to 14 in CI

* Update the changelog

Prepare v5.0.0 release (purescript#15)

* Update CI to build with the latest version of the compiler

* Update the bower repository URL to match the URL in the registry

* Upgrade bower dependencies

* Update the changelog

Merge pull request purescript#9 from purescript/compiler/0.12

Updates for 0.12

Merge pull request purescript#7 from purescript/ps-0.11

Update for PureScript 0.11

Update build for release

Update build, fix warning

Merge pull request purescript#3 from purescript/0.8-updates

Update for PureScript 0.8

Updated dependencies, remove old Int import